Tesla is known for doing continuous improvements too its cars. It doesn't wait for the end of a model year to make changes to parts or the manufacturing process. Now, it looks like Rivian might be following a similar path. Coleton of Out of Spec Detailing You Tube channel snapped these pics of two different front ends an early build and a more recent one. Besides the fact that the upper control arms are different, where the lower attaches to the frame also appears to have changed. Originally, it was a welded piece. Now, it attaches to a cast piece. You can check out his original tweet linked aboe. I've taken the liberty of putting the two images side-by-side for easier comparison viewing.